CN110868569A - Wireless high-definition helmet terminal system and working method thereof - Google Patents

Wireless high-definition helmet terminal system and working method thereof Download PDF

Info

Publication number
CN110868569A
CN110868569A CN201911135480.1A CN201911135480A CN110868569A CN 110868569 A CN110868569 A CN 110868569A CN 201911135480 A CN201911135480 A CN 201911135480A CN 110868569 A CN110868569 A CN 110868569A
Authority
CN
China
Prior art keywords
module
central processing
audio
processing unit
definition
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201911135480.1A
Other languages
Chinese (zh)
Inventor
卫洋洋
李程程
马金星
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
ANHUI CREARO TECHNOLOGY Co Ltd
Original Assignee
ANHUI CREARO TECHNOLOGY Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by ANHUI CREARO TECHNOLOGY Co Ltd filed Critical ANHUI CREARO TECHNOLOGY Co Ltd
Priority to CN201911135480.1A priority Critical patent/CN110868569A/en
Publication of CN110868569A publication Critical patent/CN110868569A/en
Pending legal-status Critical Current

Links

Images

Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00Television systems
    • H04N7/18Closed-circuit television [CCTV] systems, i.e. systems in which the video signal is not broadcast
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N19/00Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
    • H04N19/42Methods or arrangements for coding, decoding, compressing or decompressing digital video signals characterised by implementation details or hardware specially adapted for video compression or decompression, e.g. dedicated software implementation
    • H04N19/423Methods or arrangements for coding, decoding, compressing or decompressing digital video signals characterised by implementation details or hardware specially adapted for video compression or decompression, e.g. dedicated software implementation characterised by memory arrangements
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N19/00Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
    • H04N19/85Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using pre-processing or post-processing specially adapted for video compression
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N23/00Cameras or camera modules comprising electronic image sensors; Control thereof
    • H04N23/60Control of cameras or camera modules
    • H04N23/68Control of cameras or camera modules for stable pick-up of the scene, e.g. compensating for camera body vibrations
    • H04N23/682Vibration or motion blur correction
    • H04N23/683Vibration or motion blur correction performed by a processor, e.g. controlling the readout of an image memory
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N23/00Cameras or camera modules comprising electronic image sensors; Control thereof
    • H04N23/70Circuitry for compensating brightness variation in the scene
    • H04N23/74Circuitry for compensating brightness variation in the scene by influencing the scene brightness using illuminating means
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00Details of television systems
    • H04N5/76Television signal recording
    • H04N5/907Television signal recording using static stores, e.g. storage tubes or semiconductor memories
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04QSELECTING
    • H04Q5/00Selecting arrangements wherein two or more subscriber stations are connected by the same line to the exchange
    • H04Q5/24Selecting arrangements wherein two or more subscriber stations are connected by the same line to the exchange for two-party-line systems
    • H04Q5/245Circuit arrangements in which for one subscriber low frequency speech and/or signalling signals proceed on the line, while for the other subscriber the low frequency speech and/or signalling signals are modulated upon a high frequency carrier signal

Abstract

The invention provides a wireless high-definition helmet terminal system which comprises a central control unit, an audio and video unit, a wireless communication unit, a power supply unit and an auxiliary function unit. The central control unit comprises a central processing unit, a DDR4 and an SPI FLASH; the audio and video unit comprises an image sensor module and an audio module; the wireless communication unit comprises a USB HUB, a 4G module and a WIFI module; the power supply unit comprises a charging management module, a battery module, a power supply conversion module and an electric quantity detection module; the auxiliary function unit comprises a gyroscope, a TF card, a positioning module, a vibration module, a light supplementing lamp module, an indicator lamp and a key module. The invention adopts an integrated compact design, can realize the real-time acquisition, transmission and storage of high-quality audio and video, can perform noise reduction and anti-shake processing on the audio and video, can be widely applied to disaster rescue and other occasions, and favorably ensures the capability of rapidly processing emergencies and emergency commands.

Description

Wireless high-definition helmet terminal system and working method thereof
Technical Field
The invention belongs to the technical field of security and protection monitoring, relates to a high-definition helmet technology, and particularly relates to a wireless high-definition helmet terminal system and a working method thereof.
Background
With the technology in the monitoring field changing day by day, the wireless network updating and the urgent demands of various emergency scenes, a wireless high-definition helmet terminal system is produced. Traditional wearing supervisory equipment can not monitor some special scenes and handle, consequently needs an emergent auxiliary assembly to special scene processing, and wireless high definition helmet terminal system has remedied this shortcoming. The wireless high-definition helmet terminal system has the characteristics of simplicity and reliability in installation, stable and clear images, good wireless transmission performance, strong cruising ability and the like, solves the problems of fuzzy image jitter, weak information interaction ability, inconvenience in operation after wearing and the like of the traditional wearable monitoring equipment, and can be widely applied to scenes such as disaster rescue, emergency command, power rush-repair and the like.
Disclosure of Invention
The invention aims to provide a wireless high-definition helmet terminal system and a working method thereof, the system can realize high-quality audio and video real-time acquisition, transmission and storage, real-time monitoring and recording of various emergency conditions, and realization of information intercommunication between users and scheduling, and the capability of rapidly processing emergency events and emergency commands is favorably ensured.
The purpose of the invention can be realized by the following technical scheme:
a wireless high-definition helmet terminal system comprises a central control unit, an audio and video unit, a wireless communication unit, a power supply unit and an auxiliary function unit;
the central control unit comprises a central processing unit, a DDR4 and an SPI FLASH; the central processing unit is respectively connected with the DDR4 and the SPI FLASH through a DDR controller and an SPI interface;
the Audio and video unit comprises an image sensor module and an Audio module, wherein the image sensor module is connected with the central processing unit through an MIPI (mobile industry processor interface), and the Audio module is directly and interactively connected with the Audio Codec;
the wireless communication unit comprises a USB HUB, a 4G module and a WIFI module, the USB HUB is connected with the central processor through a USB2.0 interface, and the USB HUB expands a required USB interface to be connected with the 4G module and the WIFI module;
the power supply unit comprises a charging management module, a battery module, a power supply conversion module and an electric quantity detection module, wherein the charging management module is connected with the battery module and the power supply conversion module, the power supply conversion module is connected with the central processing unit, and the electric quantity detection module is connected with the central processing unit through an I2C3 interface;
the auxiliary function unit includes gyroscope, TF card, orientation module, vibration module, light filling lamp module, pilot lamp and button module, gyroscope, TF card, orientation module are respectively through I2C2, SDIO3.0, UART3 interface and central processing unit interconnect, and vibration module, light filling lamp module, pilot lamp and button module all are through GPIO mouth and central processing unit interconnect.
Further, the central processing unit is an ARM processor, and a chip of the central processing unit is HI3556V 100; the image sensor module adopts a CMOS sensor OV 4689.
Further, the WIFI module and the 4G module wirelessly transmit information processed by the central processing unit to the PC client and the mobile phone client.
Further, the central processing unit acquires gyroscope data to realize anti-shake processing of the image sensor module.
Furthermore, the keys in the indicator light and the key module control the working states of the WIFI module, the 4G module and the light supplement light module through the central processing unit.
A working method of a wireless high-definition helmet terminal system comprises the following steps:
the method comprises the following steps: the battery module supplies power to the whole system through the charging management module and the power supply conversion module, when the electric quantity detection module detects that the electric quantity of the battery module is low, the system is shut down, and the battery module supplements electric energy through the charging management module;
step two: the audio module and the image sensor module collect audio and video information of a monitoring site in real time and directly transmit the information to the central processing unit, the central processing unit combines real-time gyroscope data to perform noise reduction, anti-shake and coding compression on the audio and video information, and then the processed data is locally stored through the TF card; network transmission is carried out through the 4G module or the WIFI module to the platform command center, and meanwhile the current working state is displayed through the indicating lamp;
meanwhile, the central processor also acquires the battery power and the positioning information through the I2C and the serial port, and transmits the battery power and the positioning information to the platform command center through the 4G module or the WIFI module through the network;
the audio module is externally connected with an earphone and is used for realizing real-time talkback with the platform command center through key operation;
meanwhile, the system can also change the working states of the light supplement lamp, the WIFI module and the 4G module through keys and is suitable for different working scenes through vibration feedback;
step three: the wireless transmission connection of the central processing unit and the platform command center is adopted, and the central processing unit sends high-definition video image information, audio information and positioning information acquired on site to the platform command center in real time through a wireless network according to instructions and is used for monitoring and recording various on-site emergency conditions in real time.
The invention has the beneficial effects that: the system is connected with the platform command center through wireless transmission of the central processing unit, and the central processing unit can transmit high-definition video image information, audio information and positioning information acquired on site to the platform command center in real time through wireless network transmission according to instructions. The system monitors and records various on-site emergency situations in real time, realizes information intercommunication between users and dispatching, and advantageously ensures the capability of rapidly processing emergency events and emergency commands.
The invention is commonly used in the fields of public security fire emergency command, disaster rescue, power first-aid repair and the like, can realize the real-time monitoring of remote high-definition video pictures, bidirectional voice talkback, satellite positioning, TF card video recording and the like, can monitor and record various on-site emergency situations in real time, realizes the information intercommunication between users and scheduling, and favorably ensures the capability of rapidly processing emergency events and emergency command.
Drawings
In order to facilitate understanding for those skilled in the art, the present invention will be further described with reference to the accompanying drawings.
Fig. 1 is a schematic diagram of the structure of the present invention.
Detailed Description
As shown in fig. 1, a wireless high-definition helmet terminal system includes a central control unit, an audio/video unit, a wireless communication unit, a power supply unit and an auxiliary function unit;
wherein the central control unit comprises a central processing unit 1, a DDR43 and a SPI FLASH 2; the central processing unit 1 is respectively connected with the DDR43 and the SPI FLASH2 through a DDR controller and an SPI interface;
the Audio and video unit comprises an image sensor module 4 and an Audio module 5, wherein the image sensor module 4 is connected with the central processing unit 1 through an MIPI interface, and the Audio module 5 is directly and interactively connected with the Audio Codec;
the wireless communication unit comprises a USB HUB12, a 4G module 14 and a WIFI module 13, the USB HUB12 is connected with the central processor 1 through a USB2.0 interface, and the USB HUB12 expands a required USB interface to be connected with the 4G module 14 and the WIFI module 13;
the power supply unit comprises a charging management module 8, a battery module 9, a power conversion module 7 and an electric quantity detection module 6, wherein the charging management module 8 is connected with the battery module 9 and the power conversion module 7, the power conversion module 7 is connected with the central processing unit 1, and the electric quantity detection module 6 is connected with the central processing unit 1 through an I2C3 interface;
the auxiliary function unit comprises a gyroscope 10, a TF card 11, a positioning module 18, a vibration module 17, a light supplement lamp module 16, an indicator lamp and a key module 15, wherein the gyroscope 10, the TF card 7 11 and the positioning module 18 are respectively connected with the central processing unit 1 in an interactive mode through I2C2, SDIO3.0 and UART3 interfaces, and the vibration module 17, the light supplement lamp module 16, the indicator lamp and the key module 15 are all connected with the central processing unit 1 in an interactive mode through GPIO interfaces.
In a further scheme, the central processing unit 1 is an ARM processor, and a chip of the ARM processor is HI3556V 100; the image sensor module 4 employs a CMOS sensor OV 4689.
Further, the WIFI modules 13 and 4G modules 14 transmit information processed by the central processing unit 1 to the PC client and the mobile phone client in a wireless manner.
Further, the central processing unit 1 obtains data of the gyroscope 10 to realize anti-shake processing of the image sensor module 4.
In a further scheme, the keys in the indicator light and key module 15 control the working states of the WIFI module 13, the 4G module 14 and the light supplement light module 16 through the central processing unit 1.
The specific implementation steps of the invention are as follows:
a: the battery module supplies power to the whole system through the charging management module and the power supply conversion module, when the electric quantity detection module detects that the electric quantity of the battery module is low, the system is shut down, and the battery module supplements electric energy through the charging management module.
B: the audio module and the image sensor module collect audio and video information of a monitoring site in real time and directly transmit the information to the central processing unit, the central processing unit combines real-time gyroscope data to perform noise reduction, anti-shake and coding compression on the audio and video information, and then the processed data is locally stored through the TF card; network transmission is carried out through the 4G module or the WIFI module to the platform command center, and meanwhile the current working state is displayed through the indicating lamp; in addition, the central processing unit can also acquire the battery capacity and the positioning information through the I2C and the serial port, and perform network transmission to the platform command center through the 4G module or the WIFI module. The audio module is externally connected with an earphone and key operation can realize real-time talkback between the system and the platform command center. In addition, light filling lamp, WIFI module, 4G module operating condition that the system accessible button changed to through vibration feedback, with be applicable to different work scenes.
C: therefore, the system is connected with the platform command center through the wireless transmission of the central processing unit, and the central processing unit can send high-definition video image information, audio information and positioning information acquired on site to the platform command center in real time through a wireless network according to instructions. The system monitors and records various on-site emergency situations in real time, realizes information intercommunication between users and dispatching, and advantageously ensures the capability of rapidly processing emergency events and emergency commands.
The system is connected with the platform command center through wireless transmission of the central processing unit, and the central processing unit can transmit high-definition video image information, audio information and positioning information acquired on site to the platform command center in real time through wireless network transmission according to instructions. The system monitors and records various on-site emergency situations in real time, realizes information intercommunication between users and dispatching, and advantageously ensures the capability of rapidly processing emergency events and emergency commands.
The invention is commonly used in the fields of public security fire emergency command, disaster rescue, power first-aid repair and the like, can realize the real-time monitoring of remote high-definition video pictures, bidirectional voice talkback, satellite positioning, TF card video recording and the like, can monitor and record various on-site emergency situations in real time, realizes the information intercommunication between users and scheduling, and favorably ensures the capability of rapidly processing emergency events and emergency command.
The foregoing is merely exemplary and illustrative of the present invention and various modifications, additions and substitutions may be made by those skilled in the art to the specific embodiments described without departing from the scope of the invention as defined in the following claims.

Claims (6)

1. A wireless high-definition helmet terminal system is characterized by comprising a central control unit, an audio and video unit, a wireless communication unit, a power supply unit and an auxiliary function unit;
wherein the central control unit comprises a central processing unit (1), a DDR4(3) and an SPI FLASH (2); the central processing unit (1) is respectively connected with the DDR4(3) and the SPI FLASH (2) through a DDR controller and an SPI interface;
the Audio and video unit comprises an image sensor module (4) and an Audio module (5), wherein the image sensor module (4) is connected with the central processing unit (1) through an MIPI interface, and the Audio module (5) is directly and interactively connected with the Audio Codec;
the wireless communication unit comprises a USB HUB (12), a 4G module (14) and a WIFI module (13), the USB HUB (12) is connected with the central processor (1) through a USB2.0 interface, and the USB HUB (12) expands out a required USB interface to be connected with the 4G module (14) and the WIFI module (13);
the power supply unit comprises a charging management module (8), a battery module (9), a power supply conversion module (7) and an electric quantity detection module (6), wherein the charging management module (8) is connected with the battery module (9) and the power supply conversion module (7), the power supply conversion module (7) is connected with the central processing unit (1), and the electric quantity detection module (6) is connected with the central processing unit (1) through an I2C3 interface;
the auxiliary function unit comprises a gyroscope (10), a TF card (11), a positioning module (18), a vibration module (17), a light supplement lamp module (16), an indicator lamp and a key module (15), wherein the gyroscope (10), the TF card (11) and the positioning module (18) are respectively in interactive connection with the central processing unit (1) through I2C2, SDIO3.0 and UART3 interfaces, and the vibration module (17), the light supplement lamp module (16), the indicator lamp and the key module (15) are all in interactive connection with the central processing unit (1) through GPIO interfaces.
2. The wireless high-definition helmet terminal system according to claim 1, wherein the central processor (1) is an ARM processor with a chip of HI3556V 100; the image sensor module (4) adopts a CMOS sensor OV 4689.
3. The wireless high-definition helmet terminal system according to claim 1, wherein the WIFI module (13) and the 4G module (14) wirelessly transmit information processed by the central processing unit (1) to the PC client and the mobile phone client.
4. The wireless high-definition helmet terminal system according to claim 1, wherein the central processing unit (1) obtains gyroscope (10) data to realize anti-shake processing of the image sensor module (4).
5. The wireless high-definition helmet terminal system according to claim 1, wherein the operating states of the WIFI module (13), the 4G module (14) and the supplementary lighting module (16) are controlled by the central processing unit (1) through the indicator light and the keys in the key module (15).
6. A working method of a wireless high-definition helmet terminal system is characterized by comprising the following steps:
the method comprises the following steps: the battery module (9) supplies power to the whole system through the charging management module (8) and the power conversion module (7), when the electric quantity detection module (6) detects that the electric quantity of the battery module (9) is low, the system is shut down, and the battery module (9) supplements electric energy through the charging management module (8);
step two: the audio module (5) and the image sensor module (4) collect audio and video information of a monitoring site in real time and directly transmit the information to the central processing unit (1), the central processing unit (1) combines real-time gyroscope (10) data to perform noise reduction, anti-shake and coding compression on the audio and video information, and then the processed data is locally stored through a TF card (11); network transmission is carried out through the 4G module (14) or the WIFI module (13) to the platform command center, and meanwhile the current working state is displayed through the indicating lamp;
meanwhile, the central processing unit (1) also acquires the battery power and the positioning information through the I2C and the serial port, and performs network transmission to the platform command center through the 4G module (14) or the WIFI module (13);
the audio module (5) is externally connected with an earphone and is used for realizing real-time talkback between the system and the platform command center through key operation;
meanwhile, the system can also change the working states of the light supplement lamp, the WIFI module (13) and the 4G module (14) through keys and is suitable for different working scenes through vibration feedback;
step three: the wireless transmission connection of the central processing unit (1) and the platform command center is adopted, and the central processing unit (1) sends high-definition video image information, audio information and positioning information acquired on site to the platform command center in real time through a wireless network according to instructions, so that the high-definition video image information, the audio information and the positioning information can be used for monitoring and recording various on-site emergency conditions in real time.
CN201911135480.1A 2019-11-19 2019-11-19 Wireless high-definition helmet terminal system and working method thereof Pending CN110868569A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201911135480.1A CN110868569A (en) 2019-11-19 2019-11-19 Wireless high-definition helmet terminal system and working method thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201911135480.1A CN110868569A (en) 2019-11-19 2019-11-19 Wireless high-definition helmet terminal system and working method thereof

Publications (1)

Publication Number Publication Date
CN110868569A true CN110868569A (en) 2020-03-06

Family

ID=69655565

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201911135480.1A Pending CN110868569A (en) 2019-11-19 2019-11-19 Wireless high-definition helmet terminal system and working method thereof

Country Status (1)

Country Link
CN (1) CN110868569A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111767967A (en) * 2020-06-16 2020-10-13 上海钜星科技有限公司 Intelligent customs identification and management system
CN112311061A (en) * 2020-11-06 2021-02-02 成都蓉视通科技有限公司 Control method based on multi-source intelligent power manager
CN112332879A (en) * 2020-11-05 2021-02-05 广州新源禾信息科技有限责任公司 Multi-party audio-video cooperative intelligent management and control system and control method

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20130335567A1 (en) * 2012-06-18 2013-12-19 Wen Chuan Wang Vehicle event data recorder set capable of retaining a handset
US9380273B1 (en) * 2009-10-02 2016-06-28 Rockwell Collins, Inc. Multiple aperture video image enhancement system
CN207084248U (en) * 2017-04-11 2018-03-13 成都航空职业技术学院 A kind of railway public work construction personal safety protection helmet based on 4G
CN207460154U (en) * 2017-11-01 2018-06-05 北京旋极信息技术股份有限公司 Wear-type wireless terminal based on 4G private networks
CN208299890U (en) * 2018-05-08 2018-12-28 小艾帮帮(杭州)科技有限公司 A kind of wear-type remote assistance device

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9380273B1 (en) * 2009-10-02 2016-06-28 Rockwell Collins, Inc. Multiple aperture video image enhancement system
US20130335567A1 (en) * 2012-06-18 2013-12-19 Wen Chuan Wang Vehicle event data recorder set capable of retaining a handset
CN207084248U (en) * 2017-04-11 2018-03-13 成都航空职业技术学院 A kind of railway public work construction personal safety protection helmet based on 4G
CN207460154U (en) * 2017-11-01 2018-06-05 北京旋极信息技术股份有限公司 Wear-type wireless terminal based on 4G private networks
CN208299890U (en) * 2018-05-08 2018-12-28 小艾帮帮(杭州)科技有限公司 A kind of wear-type remote assistance device

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111767967A (en) * 2020-06-16 2020-10-13 上海钜星科技有限公司 Intelligent customs identification and management system
CN112332879A (en) * 2020-11-05 2021-02-05 广州新源禾信息科技有限责任公司 Multi-party audio-video cooperative intelligent management and control system and control method
CN112311061A (en) * 2020-11-06 2021-02-02 成都蓉视通科技有限公司 Control method based on multi-source intelligent power manager

Similar Documents

Publication Publication Date Title
CN110868569A (en) Wireless high-definition helmet terminal system and working method thereof
CN102333202A (en) Network video monitoring device
CN201846430U (en) Network video monitoring device
WO2018153234A1 (en) Graphical power line monitoring device and method
CN102957888A (en) Wireless fidelity (WiFi)-communication-based portable audio and video transmission and recording device
CN201204662Y (en) Network camera for mining
CN102685459A (en) Ambulance vehicle-mounted third generation (3G) wireless video monitoring device and monitoring method thereof
CN104270613A (en) Portable wireless emergency command system
CN204681498U (en) Video routing inspection system
CN213960331U (en) Multi-mode electric power emergency communication terminal
CN101394544B (en) Network camera for mining
CN116301290A (en) Screen state control method and device, electronic equipment and storage medium
CN214799713U (en) Ad hoc network communication terminal and system with panoramic camera shooting function
CN201528399U (en) Wireless audio/video monitoring device
CN210693993U (en) On-vehicle POE switch
CN209930294U (en) Multimedia integrated access equipment for emergency communication system
CN113554542A (en) Emergency command and dispatching platform for emergent public health events of 5G mobile flow dispatching instrument
CN212379836U (en) Intelligent glasses signal switching device
CN204090038U (en) A kind of portable mobile wireless emergency commading system
CN216599760U (en) Network camera with solar function
CN104796598A (en) Wireless camera for space and working method thereof
CN210781095U (en) Individual soldier emergency communication device
CN213043782U (en) Face recognition system for smart building
CN202957915U (en) WiFi communication based portable audio-video transmitting and recording device
CN209949267U (en) Binocular camera control system

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
RJ01 Rejection of invention patent application after publication
RJ01 Rejection of invention patent application after publication

Application publication date: 20200306